Products
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch
LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch

LF31Air differential pressure switch Gas Water Heater Repair Parts Air Pressure Switch

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≥1 Pieces
US $12
≥50 Pieces
US $8
≥500 Pieces
US $7
≥1000 Pieces
US $6
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Quick Details

Model Number:
LF31
Max. Current:
5A
Max. Working Pressure:
3000pa
Terminals:
6.3mm or4.8 copper alloy
Media:
air, products of combustion or natural gas
Color:
Black
Contact Arrangement:
SPST OR SPDT
Proof Pressure:
100in W.C. (3.6psi)
Certification:
UL, CE, ccc

Quick Details

Max. Voltage:
250V
Place of Origin:
Zhejiang, China
Brand Name:
LEFOO
Model Number:
LF31
Max. Current:
5A
Max. Working Pressure:
3000pa
Terminals:
6.3mm or4.8 copper alloy
Media:
air, products of combustion or natural gas
Color:
Black
Contact Arrangement:
SPST OR SPDT
Proof Pressure:
100in W.C. (3.6psi)
Certification:
UL, CE, ccc
Product Description

LF31 LEFOO Air Differential Pressure Switch

1. Product Pictures:

2. Product Specifications:

LF31 differential pressure switches offer pressure, vacuum and differential models capable of sensing very low set points, and switching current up to 5A resistive, 2.5A inductive. Designed for use in the HVAC industry, where reliable air proving is critical to both performance and customer safety, the LF31 is a favorite with leading manufacturers of gas-fired warm air furnaces and water heaters.

Model
LF31
Media
Air , products of combustion, L.P. or natural gas
Operating Pressure Range
0.15" W.C. to 34" W.C.
Proof Pressure
100" W.C. (3.6PSI)
Operating Temperature
-40° C to 85° C
Contact Arrangement
SPST or SPDT
Electric Rating
Resistance : Initial: <50 milliohms
Current: 100mA minimum, 5A resistive maximum
(fine silver alloy contacts);
15mA minimum, 0.5A resistive maximum
(gold-platinum-silver alloy contacts);
Terminals
0.032" x 0.250" copper alloy
Connection
Inlet 0.25" for tube connection
Mounting Bracket all kinds of mounting bracket is available on request

Conversion:  1"W.C.= 1 inch/H 2 O=249Pa   1mbar=100Pa

3. Product Dimensions(mm) :

4. Production Lines:

5. Patens:

6. Quality Control:

7. Why choose us?

25 patents

45 products were certified with UL,CSA,VDE,CCC and CE

50 engineers teamed for R&D

Coorperation experience with member in fortune global 500

8. LEFOO Exhibitions:

2019. 3  Acrex  India

2019. 1  Ahr  Expo

2018. 6 Aquatech Shanghai

2018. 4 Canton Fair

2018. 4 China Refrigeration show

2018.3 MCE Milano

2018.1 AHR Chicago

9. Packing and Shipping:

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details, pls contact me freely!

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